According to charles’s law, what happens to the volume of a gas when temperature decreases? assume the gas is at constant pressure.

a.
it is constant
c.

it increases

b.
it decreases
d.

none of the above

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as